Dear all,
I'm using the package "survival" for adjusting the Cox model with multiple
events (Prentice, Williams and Peterson Model). I have several covariates,
some of them are time-dependent.
I'm using the function"cox.zph" to check the proportional hazards. Due to
the nature of the time-dependent covariates, I don't need to analyse the
assumptions of the proportional hazards associated with the
time-dependent covariates. Is it right?
​Thanks for your attention.
Best regards,
Helena.
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